CN108119322B - A kind of valve plate balancing tilting moment - Google Patents
A kind of valve plate balancing tilting moment Download PDFInfo
- Publication number
- CN108119322B CN108119322B CN201711091765.0A CN201711091765A CN108119322B CN 108119322 B CN108119322 B CN 108119322B CN 201711091765 A CN201711091765 A CN 201711091765A CN 108119322 B CN108119322 B CN 108119322B
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- China
- Prior art keywords
- oil
- valve plate
- pressure
- balance
- pressure oil
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/0019—Piston machines or pumps characterised by having positively-driven valving a common distribution member forming a single discharge distributor for a plurality of pumping chambers
- F04B7/0023—Piston machines or pumps characterised by having positively-driven valving a common distribution member forming a single discharge distributor for a plurality of pumping chambers and having a rotating movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Valves (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a kind of New Type Valve Plates that can balance tilting moment, on the one hand the high pressure oil in the waist type groove of left side enters to the pressure balance oil pocket on right side through overdamp connectivity slot, similarly the low pressure oil on right side also flows into left pressure balance oil pocket, make valve plate two sides that high pressure oil and low pressure oil all be distributed with, therefore the stress condition on the right side that can face left with Equilibrium Assignment；On the other hand by designing different size waist type groove windows on valve plate, so that oil sucking window size is less than oil extraction window size, advantageously reduce the pressure of oil extraction area oil liquid, further improve the out-of-balance force distribution on valve plate.The New Type Valve Plate can rationally utilize the structure size of valve plate, utmostly improve valve plate stress, balance tilting moment, reduce the vibration of compression shock bring, reducing noise also can guarantee sealing simultaneously, reduces the leakage rate of pump, improves the mechanical efficiency and volumetric efficiency of pump work.
Description
Technical field
The present invention relates to a kind of New Type Valve Plates for balancing tilting moment, axial plunger pump are mainly used in, to balance height
The pressure difference of low pressure oil pocket.
Background technique
Pluger type hydraulic pump be by plunger in cylinder holes reciprocating motion change plunger case in volume come realize oil suction and
The hydraulic pump of pressure oil.Plunger pump has many advantages, such as that rated pressure is high, compact-sized, high-efficient and flow is easy to adjust.Plunger pump
It is divided into axial plunger pump and radial plunger pump, radial plunger pump is the vibration-direction of the plunger plunger vertical with drive shaft
Pump, and axial plunger pump be is moved back and forth in plunger hole using the plunger parallel with transmission shaft generated volume change come into
Row work.Axial plunger pump can also be divided into clino-axis type and two kinds inclined disc type, and the pair that rubs in both forms is all axial plunger
The key position of pump, can it work normally plunger pump and its there is decisive influence in the service life, and friction pair includes plunger and cylinder
Friction between body opening, piston shoes and swash plate and valve plate and cylinder body flow end face.
At work, effect has a pair of contrary power, i.e. cylinder to hydraulic pump between high-speed rotating cylinder body and valve plate
To the pressing force of valve plate caused by high pressure oil in body plunger cavity, and by valve plate window and band oil film pressure institute
The hydraulic pressure support power to cylinder body generated, the leakage boundary between cylinder body and valve plate is larger, and stress condition is also more complex, because
This requires to have between cylinder body and valve plate good to make plunger pump efficiency with higher and longer service life
Sealing performance and greasy property should reasonably carry out sealing and stress balance design between cylinder body and valve plate.In the present invention
Mainly using valve plate and cylinder body flow end face as starting point, improve the unbalanced moments of toppling that valve plate is subject to.
For leakage existing between valve plate and cylinder body flow end face friction and force unbalance problem, cylinder body fortune is influenced
Capable stationarity and balance, the tilting moment of generation easily make flow subcomponent generate eccentric wear, lead to pair in axial piston pump
Phenomena such as sealing effect is bad, and generating can not work normally axial plunger pump compared with gross leak, seizes, vibration noise.
Therefore, presently, there are based on residual clamping force design method design flow-distribution mechanism, even if pressing force suffered by cylinder body is suitably big
In the separating force that oil film generates, it is desirable that there is suitable residual clamping force, makes both to have formed borderline oil film appropriate between friction is secondary,
There is certain sealing performance again, but its shortcoming is that can be only formed unstable borderline oil film；And solving high-low pressure waist
In the pressure injustice problem of type window, by designing two rows of plunger pumps on cylinder body, double inlet port is offered on valve plate
With double hydraulic fluid port, to make its interlaced cooperation of high-low pressure waist type groove, to solve the problems, such as high-low pressure chamber force unbalance, but this
The structure of sample needs to design two groups of Slipper couplings, and structure is complicated, and part is more, is not easy to realize.
Therefore, to avoid the above problem, a kind of New Type Valve Plate for balancing tilting moment is designed, can effectively solve flow
Phenomena such as balance and leakage problem of height pumping cavity, avoid the occurrence of and seize on disk, vibration, compression shock and noise.
Summary of the invention
The purpose of the present invention is designing a kind of New Type Valve Plate that can balance tilting moment, high-low pressure is connected to by damping slot
Oil-distribution port and pressure balance chamber, and the size of pressure oil window on valve plate is made to be greater than oil sucking window, further decrease high-low pressure
It is tilted caused by injustice, reduces the vibration of compression shock bring, reducing noise also can guarantee sealing simultaneously, reduce the leakage of pump
Amount, improves the mechanical efficiency and volumetric efficiency of pump work.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of New Type Valve Plate structure is to replace traditional auxiliary branch by the way of static pressure support in valve plate edge
Support offers one week circular static pressure support slot, and opens up logical oily aperture, and logical oily aperture and high pressure oil-discharging cavity on pressure oil side
Between oil duct, the oil liquid of oil-discharging cavity can be entered circular static pressure support slot after logical oily aperture and by the decompression of damping sulculus；
Triangle Silencing groove has been opened up respectively at high pressure oil-discharging cavity and low pressure oil sucting cavity, avoids causing to press when high-low pressure switches in plunger cavity
Phenomena such as power impact, vibration；While high pressure oil extraction edge of window symmetrically devises the pressure balance oil of half cycle on the left of valve plate
Chamber and damping connectivity slot, damping connectivity slot connection pressure balance oil pocket and right side low pressure oil sucking window, to will be in oil sucting cavity
Oil liquid through overdamp connectivity slot introduce relief groove；Similarly, the oil liquid on the left of valve plate in high pressure oil-discharging cavity is through overdamp
Connectivity slot flows into the relief groove on right side, and with this, to realize, being interspersed for high-low pressure is toppled at left and right sides of valve plate with balance
Torque；By changing the size of waist type groove on valve plate, make low pressure oil sucking window is dimensioned slightly smaller than high pressure oil extraction window, thus
Reduce the oil liquid pressure of high pressure oil extraction side；In addition to this design has inside and outside band on valve plate, and isolation suction pressure oil pocket avoids
Phenomena such as pollution, leakage.
On cylinder body flow end face, design has 6 logical oily blind holes, this 6 logical oily blind holes are circumferential on cylinder body flow end face
Distribution, and interval is connected with logical oily aperture, realizes the function of uniform static pressure support slot oil film thickness and repairing.
A kind of New Type Valve Plate balancing tilting moment, devises circular support slot, in high pressure from flow plate edge
Oil-discharging cavity position is provided with logical oily aperture, can be introduced into static pressure support slot oil liquid through logical oily aperture by oil-discharging cavity, realize static pressure
The continuous oil supply of support slot, the logical oily blind hole of cylinder body flow end face is intermittent at this time connect with logical oily aperture, can store a small amount of
Oil liquid from oil-discharging cavity carries out repairing to static pressure support slot using a small amount of oil liquid, homogenizes oil film.On the inside of static pressure support slot
Exterior seal ring is set gradually, pressure balance chamber, suction pressure oil pocket, there are also inner seal rings.Exterior seal ring to external environment every
From avoiding oil sources from leaking；Symmetrical pressure balance chamber is rationally designed out by reasonably calculating each area's liquid bearing capacity
The distance of center circle of appropriate pressure balance chamber realizes being interspersed to balance tilting moment for valve plate left and right sides high-low pressure；It inhales
Pumping cavity, various sizes of suction pressure oil pocket waist type window, oil sucking window waist type groove are dimensioned slightly smaller than the size of pressure oil window, help
In the oil liquid pressure for reducing pumping cavity, to provide advantageous means for balance tilting moment；The interior sealing of most inner side design
Band is prevented from oil liquid leakage, pollutes, convenient for improving the volumetric efficiency of pump.
The benefit designed in this way can rationally utilize the structure size of valve plate, balance tilting moment to the greatest extent, guarantee
Phenomena such as pump housing traveling comfort reduces bump leakage, avoids compression shock, noise.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of valve plate of the present invention.
Fig. 2 is the structural schematic diagram of cylinder body valve plate distribution of the present invention.
1-2-high-voltage oil cavity of pressure balance oil pocket, 3-damping, 4-wear areas of connectivity slot, 5-static pressure support
9-inner seal ring of slot 6-exterior seal ring, 7-low pressure oil pocket 8-triangle Silencing groove 10-leads to oil aperture 11-
Logical oil blind hole.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings:
A kind of New Type Valve Plate balancing tilting moment as shown in Figure 1, using between high-voltage oil cavity 2 and logical oily aperture 10
Pressure oil in high-voltage oil cavity 2 is introduced into static pressure support slot 5 by oil duct via logical oily aperture 10, and logical oily aperture 10 is by damping slot
Be connected with static pressure support slot 5, the working principle of the distributing construction of this continuous oil supply be cylinder body during rotation, plunger cavity
In oil duct of the high pressure oil through opening up flow into logical oily aperture 10, flowed into static pressure support slot 5 through damping slot, thus between friction is secondary
Set up the propulsive thrust greater than pressing force, float cylinder body, and logical oily aperture 10 periodically be distributed in cylinder body valve plate distribution
6 logical oily blind holes 11 on disk are connected, and the rotation of this interval makes to retain certain oil liquid in logical oily blind hole 11, are operating
During lead to oily blind hole 11 and can carry out repairing to static pressure support slot 5, uniform oil film guarantee certain oil film thickness.
When the oil liquid in plunger cavity goes to the high-voltage oil cavity 2 of valve plate, due to valve plate asymmetrical design, high pressure oil window
The size of mouth is slightly larger than low pressure oil window, in order to the pressure of higher-pressure region oil liquid is reduced, to reduce valve plate height
The pressure difference of pumping cavity reduces the vibration of compression shock bring, provides advantageous means for balance tilting moment；Furthermore valve plate
High pressure oil in the waist type groove in left side is entered to through overdamp connectivity slot 3 in the pressure balance oil pocket 1 on right side, while right side is low
Pressure oil also passes through damping connectivity slot 3 and enters in the pressure balance oil pocket 1 in left side, and such height pressure oil is interlaced, makes flow
High pressure oil and low pressure oil, therefore the stress on the right side of the left and right sides of valve plate can be faced left with Equilibrium Assignment is all distributed in disk two sides
Situation, i.e. left side are dispersed with the short arm of force of high pressure oil and the long arm of force of low pressure oil, and right side is dispersed with the short arm of force of low pressure oil and high pressure oil is long
The arm of force can effectively balance the moment unbalance phenomenon of left and right sides, and the structure size of cylinder body and valve plate is rationally utilized,
The size for further controlling total tilting moment improves the balance of plunger pump.
Be dispersed with triangle Silencing groove 8 respectively at the kidney-shaped window of two sides, can avoid as caused by compression shock vibration and
Noise.
Claims (2)
1. a kind of valve plate for balancing tilting moment, is to have opened circular static pressure support slot in valve plate edge, and open up logical
Oily aperture can be by the oil liquid of oil-discharging cavity through logical oily aperture and by damping by the oil duct between logical oily aperture and high pressure oil-discharging cavity
The static pressure support slot for entering circumference type after sulculus decompression generates one using the fricting movement between valve plate and cylinder body flow end face
Layer liquid oil film realizes static pressure support；By changing the size of the waist type groove on valve plate, make being dimensioned slightly smaller than for oil sucking window
Pressure oil window, to reduce the oil liquid pressure in high pressure oil extraction area；In addition the pressure of semi-circumference type is symmetrically distributed in valve plate two sides
One end of side pressure balance oil pocket is connected, by another lateral pressure by dynamic balance oil pocket by damping connectivity slot with oil sucking window
One end of balance oil pocket is connected with pressure oil window, makes valve plate two sides that high-voltage oil cavity and low pressure oil pocket all be distributed with, thus into one
Step improves the unbalanced moments of valve plate two sides；Triangle Silencing groove has been opened up respectively at high pressure oil-discharging cavity and low pressure oil sucting cavity,
It has been arranged concentrically exterior seal ring between static pressure support slot and pressure balance oil pocket, has been arranged concentrically in valve plate most inner side interior close
Seal.
2. a kind of valve plate for balancing tilting moment according to claim 1, using between pressure oil window and logical oily aperture
Oil duct the pressure oil in high pressure oil-discharging cavity is introduced into the static pressure support slot of a complete cycle via logical oily aperture, realization complete cycle is continuous
Sealing, and make hydraulic pressure support power continuous uniform is distributed in flow plate edge, and using logical oily blind hole to static pressure support slot into
Row repairing, uniform oil film guarantee certain oil film thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711091765.0A CN108119322B (en) | 2017-11-08 | 2017-11-08 | A kind of valve plate balancing tilting moment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711091765.0A CN108119322B (en) | 2017-11-08 | 2017-11-08 | A kind of valve plate balancing tilting moment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108119322A CN108119322A (en) | 2018-06-05 |
| CN108119322B true CN108119322B (en) | 2019-07-26 |
Family
ID=62228446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711091765.0A Expired - Fee Related CN108119322B (en) | 2017-11-08 | 2017-11-08 | A kind of valve plate balancing tilting moment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108119322B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825486A (en) * | 2018-06-06 | 2018-11-16 | 哈尔滨理工大学 | A kind of novel combination type end face oil distributing structure |
| CN114320869B (en) * | 2021-11-17 | 2024-05-31 | 中铁工程装备集团有限公司 | Method and device for balancing lateral force of axial plunger pump cylinder body |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5675974A (en) * | 1979-11-24 | 1981-06-23 | Tokyo Keiki Co Ltd | Speed change mechanism for fluid pressure rotary apparatus |
| DE3140339A1 (en) * | 1981-10-10 | 1983-04-28 | Goetze Ag, 5093 Burscheid | Disc cam for hydraulic motors and its method of manufacture |
| CN1074019A (en) * | 1991-12-30 | 1993-07-07 | 甘肃工业大学 | The assignment method of low-noise axial plunger pump and port plate structure |
| US5593285A (en) * | 1995-01-13 | 1997-01-14 | Caterpillar Inc. | Hydraulic axial piston unit with multiple valve plates |
| CN101509488A (en) * | 2008-10-30 | 2009-08-19 | 傅松权 | Oil distributing tray with pressure equilibrium chamber |
| CN207673531U (en) * | 2017-11-08 | 2018-07-31 | 哈尔滨理工大学 | A kind of New Type Valve Plate of balance tilting moment |
-
2017
- 2017-11-08 CN CN201711091765.0A patent/CN108119322B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5675974A (en) * | 1979-11-24 | 1981-06-23 | Tokyo Keiki Co Ltd | Speed change mechanism for fluid pressure rotary apparatus |
| DE3140339A1 (en) * | 1981-10-10 | 1983-04-28 | Goetze Ag, 5093 Burscheid | Disc cam for hydraulic motors and its method of manufacture |
| CN1074019A (en) * | 1991-12-30 | 1993-07-07 | 甘肃工业大学 | The assignment method of low-noise axial plunger pump and port plate structure |
| US5593285A (en) * | 1995-01-13 | 1997-01-14 | Caterpillar Inc. | Hydraulic axial piston unit with multiple valve plates |
| CN101509488A (en) * | 2008-10-30 | 2009-08-19 | 傅松权 | Oil distributing tray with pressure equilibrium chamber |
| CN207673531U (en) * | 2017-11-08 | 2018-07-31 | 哈尔滨理工大学 | A kind of New Type Valve Plate of balance tilting moment |
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| Publication number | Publication date |
|---|---|
| CN108119322A (en) | 2018-06-05 |
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Granted publication date: 20190726 Termination date: 20201108 |